Yep.
Programme -> Standardprogramme -> Standardprogramme festlegen ->
should be exactly what you mean. Then you get a list of programs like this oneImage may be NSFW.
Clik here to view.
and if one selects the option "standards for this program define" (red), then one has the lists of file-types that I posted above. I did this just for the sake of checking, but I am sure that IE is the default browser, since it opens from Outlook, from inside a PDF, and so on. I think I have found a bug.
By the way thanks for opening my test file, this confirms me that I am doing all correctly, it is the system that fails. Have a nice weekend!
Claudio
